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Robert N. Hall

Robert N. HallBorn: 1919Birthplace: New Haven, Conn. High-voltage, high-power semiconductor pin rectifier—Hall's invention boosted efficiency and reduced wasted power and destructive heat…

Robert S. Ledley

Robert S. LedleyBorn: 1926Birthplace: New York City Diagnostic x-ray systems—Ledley developed the ACTA diagnostic x-ray scanner, the first whole-body computerized tomography (CT) machine. He…

Robert N. Noyce

Robert N. Noyce Born: 1927Birthplace: Iowa Semiconductor device-and-lead structure—Noyce, as research director of Fairchild Semiconductor, was responsible for the initial development of silicon mesa…

Robert H. Rines

Robert H. RinesBorn: 1922Birthplace: Boston, Mass. High resolution-image-scanning radar and sonar—Rines' radar and sonar inventions have been used by the military in the Persian Gulf War. In…

Robert W. Bower

Robert W. Bower Born: 1936 Birthplace: Santa Monica, Calif. Field-effect device with insulated gates—Also known as the…

Robert Heath Dennard

Robert Heath Dennard Born: 1932Birthplace: Terrell, Tex. One-transistor dynamic random access memory—Dr. Dennard's invention of DRAM, most often called RAM, was a core development in today's…

Robert Gore Biography

Robert Gore Born: 1937 Birthplace: Salt Lake City, Utah ePTFE—Gore invented a new form of polytetrafluoroethylene (ePTFE) widely known by the…

Robert Langer, Jr.

Robert Langer, Jr. Born: 1948 Birthplace: Albany, New York Controlled Drug Delivery—Langer revolutionized biomedical technology through the…

Dr. Robert Jackson

Dr. Robert JacksonBorn: Aug. 6, 1932Surgeon revolutionized sports medicine by popularizing the use of arthroscopic surgery to treat injuries; learned technique from Japanese physician that…

Julia Roberts Biography

Julia Roberts actressBorn: 10/28/1967Birthplace: Smyrna, Georgia   Academy Award-winning film actress known for her Southern charm and her commercially successful romantic comedies, which include…